Ockham, G. d., & Etzkorn, G. J. (1979). Guillelmi de Ockham Opera philosophica et theologica: Ed. Girardus I. Etzkorn et. Franciscus E. Kelley. Franciscan Institute of St. Bonaventure University.
Cita Chicago (17th ed.)Ockham, Guilelmus de, i Girard J. Etzkorn. Guillelmi De Ockham Opera Philosophica Et Theologica: Ed. Girardus I. Etzkorn Et. Franciscus E. Kelley. St. Bonaventure, NY: Franciscan Institute of St. Bonaventure University, 1979.
Cita MLA (8th ed.)Ockham, Guilelmus de, i Girard J. Etzkorn. Guillelmi De Ockham Opera Philosophica Et Theologica: Ed. Girardus I. Etzkorn Et. Franciscus E. Kelley. Franciscan Institute of St. Bonaventure University, 1979.
Atenció: Aquestes cites poden no estar 100% correctes.